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首页> 外文期刊>Cell and Tissue Biology >Effects of Inhibitors of Serine/Threonine Protein Kinases on Arabidopsis thaliana Root Morphology and Microtubule Organization in Its Cells
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Effects of Inhibitors of Serine/Threonine Protein Kinases on Arabidopsis thaliana Root Morphology and Microtubule Organization in Its Cells

机译:丝氨酸/苏氨酸蛋白激酶抑制剂对拟南芥根细胞形态和微管组织的影响

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摘要

The effect of different types of serine/threonine protein kinase inhibitors (cyclin-dependent, Ca2+-calmodulin dependent and protein kinase C) on the microtubule organization in cells of Arabidopsis thaliana main primary root zones were investigated in vivo. It was found that the microtubules in epidermal and cortex cells of transition and elongation zones, as well as microtubules in trichoblasts and atrichoblasts of the differentiation zone, were the most sensitive to the action of the investigatedprotein kinase inhibitors. It was established that, in these types of cells, microtubules change their initial orientation from transverse (oblique) to chaotic or longitudinal relative to the main primary root axis as a result of serine/threonine proteinkinase inhibition. Microtubules in cells of root meristematic zone, as well as in root hairs, were less sensitive to the action of tested protein kinase inhibitors. Changes in the orientation of microtubules in cells of primary root zones under the effect of serine/threonine protein kinase inhibitors led to further disturbances in the growth and differentiation processes. It was assumed that the phosphorylation of microtubule proteins, primarily tubulin, could be involved in the regulation of these processes.
机译:在体内研究了不同类型的丝氨酸/苏氨酸蛋白激酶抑制剂(细胞周期蛋白依赖性,Ca2 +-钙调蛋白依赖性和蛋白激酶C)对拟南芥主要初级根区细胞微管组织的影响。已经发现,过渡区和伸长区的表皮和皮质细胞中的微管,以及分化区的单核细胞和成纤维细胞中的微管对所研究的蛋白激酶抑制剂的作用最敏感。已经确定,在这些类型的细胞中,由于丝氨酸/苏氨酸蛋白激酶抑制作用,微管相对于主要的主根轴从横向(斜向)到混沌或纵向改变其初始方向。根分生组织区的细胞以及根毛中的微管对测试的蛋白激酶抑制剂的作用较不敏感。在丝氨酸/苏氨酸蛋白激酶抑制剂的作用下,初级根区细胞微管方向的变化导致生长和分化过程的进一步紊乱。假定微管蛋白(主要是微管蛋白)的磷酸化可能参与了这些过程的调控。

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